CN108650081A - Information transferring method, apparatus and system based on quantum entanglement - Google Patents
Information transferring method, apparatus and system based on quantum entanglement Download PDFInfo
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- CN108650081A CN108650081A CN201810292590.8A CN201810292590A CN108650081A CN 108650081 A CN108650081 A CN 108650081A CN 201810292590 A CN201810292590 A CN 201810292590A CN 108650081 A CN108650081 A CN 108650081A
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L9/00—Cryptographic mechanisms or cryptographic arrangements for secret or secure communications; Network security protocols
- H04L9/08—Key distribution or management, e.g. generation, sharing or updating, of cryptographic keys or passwords
- H04L9/0816—Key establishment, i.e. cryptographic processes or cryptographic protocols whereby a shared secret becomes available to two or more parties, for subsequent use
- H04L9/0852—Quantum cryptography
- H04L9/0858—Details about key distillation or coding, e.g. reconciliation, error correction, privacy amplification, polarisation coding or phase coding
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B10/00—Transmission systems employing electromagnetic waves other than radio-waves, e.g. infrared, visible or ultraviolet light, or employing corpuscular radiation, e.g. quantum communication
- H04B10/70—Photonic quantum communication
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L9/00—Cryptographic mechanisms or cryptographic arrangements for secret or secure communications; Network security protocols
- H04L9/08—Key distribution or management, e.g. generation, sharing or updating, of cryptographic keys or passwords
- H04L9/0816—Key establishment, i.e. cryptographic processes or cryptographic protocols whereby a shared secret becomes available to two or more parties, for subsequent use
- H04L9/0819—Key transport or distribution, i.e. key establishment techniques where one party creates or otherwise obtains a secret value, and securely transfers it to the other(s)
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L9/00—Cryptographic mechanisms or cryptographic arrangements for secret or secure communications; Network security protocols
- H04L9/08—Key distribution or management, e.g. generation, sharing or updating, of cryptographic keys or passwords
- H04L9/0816—Key establishment, i.e. cryptographic processes or cryptographic protocols whereby a shared secret becomes available to two or more parties, for subsequent use
- H04L9/0852—Quantum cryptography
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- Optical Modulation, Optical Deflection, Nonlinear Optics, Optical Demodulation, Optical Logic Elements (AREA)
Abstract
The embodiment of the present invention provides a kind of information transferring method and system based on quantum entanglement.This method includes：Quantum entanglement detection is carried out to photon in the second photon group of photon and information receiving end in the first photon group of information transmitting terminal；If each photon is satisfied by quantum entanglement characteristic, according to the association in time characteristic between photon in the 4th photon group of photon and described information receiving terminal in the third photon group of the local terminal, modulation to the information to be transmitted on photon in the third photon group is sent to described information receiving terminal.The present invention realizes the safe transmission of no key, avoids key and there are problems that security risk in preservation and management.
Description
Technical field
The present embodiments relate to video technique field more particularly to a kind of information transferring method based on quantum entanglement,
Apparatus and system.
Background technology
In the communication of national economy and national defense safety, it is usually directed to important information.The leakage of these information may can
It causes serious economic loss or brings serious security risk.Therefore, information privacy seems particularly always in the communications.
With the continuous development of computer technology, quantum calculation achieves breakthrough.Since quantum calculation can be significantly
Quickening cracks speed to the conventional cryptography means based on classical cryptoraphy principle, in addition Quantum Secure Communication utilizes quantum
The basic principle of mechanics can realize that the secret communication that can not physically crack, Quantum Secure Communication are paid close attention to by wide hair.
But the safety of the private communication technology based on quantum key distribution, which remains unchanged, needs to rely on adding for key progress classics
Decrypting process realizes information privacy.Thus, there can be security risk in the preservation of key and management process.
Invention content
The embodiment of the present invention provides a kind of information transferring method, apparatus and system based on quantum entanglement, existing to solve
Have when information privacy transmits in technology and there are problems that security risk in the preservation and management of key.
According to the first aspect of the invention, the embodiment of the present invention provides a kind of information transferring method based on quantum entanglement,
Including：Quantum entanglement detection is carried out to photon in the second photon group of photon and information receiving end in the first photon group of local terminal；
If each photon is satisfied by quantum entanglement characteristic, according to the of photon in the third photon group of the local terminal and described information receiving terminal
Association in time characteristic in four photon groups between photon passes modulation to the information to be transmitted on photon in the third photon group
It send to described information receiving terminal.
According to the second aspect of the invention, the embodiment of the present invention provides a kind of information transferring method based on quantum entanglement,
Including：The corresponding second detection moment group of second photon group of local terminal is sent to described information transmitting terminal so that described information is sent out
Sending end is according to the corresponding first detection moment group of the first photon group and the second detection moment group, in the first photon group
Photon carries out quantum entanglement detection in photon and the second photon group；Photon is located at described information hair in the first photon group
Sending end；At the time of acquisition detects each photon in the 4th photon group, as the 4th detection moment group, and determine that the described 4th visits
The timeslice number of timeslice where each moment in moment group is surveyed, and as the second timeslice number group；When by described second
Between piece number group be sent to described information transmitting terminal, for described information transmitting terminal in detecting the first photon group photon
With when photon meets quantum Entanglement in the second photon group, acquisition target acquisition time group simultaneously returns；The target is visited
It is described information transmitting terminal by the frequency of photon in the third photon group of modulates information to be transmitted to described information transmitting terminal to survey the time
Target light subgroup is obtained in spectrum, is then obtained according to the target light subgroup and the 4th photon group；It is visited according to the target
It surveys moment group and the corresponding 4th detection moment group of the 4th photon group carries out coincidence counting, obtain the information to be transmitted.
According to the third aspect of the invention we, the embodiment of the present invention provides a kind of information transmitting apparatus based on quantum entanglement,
Including：First safety detection module and information sending module；First safety detection module, for the first photon to local terminal
Photon carries out quantum entanglement detection in the second photon group of photon and information receiving end in group；Described information sending module, is used for
If each photon is satisfied by quantum entanglement characteristic, according to the of photon in the third photon group of the local terminal and described information receiving terminal
Association in time characteristic in four photon groups between photon passes modulation to the information to be transmitted on photon in the third photon group
It send to described information receiving terminal.
According to the fourth aspect of the invention, the embodiment of the present invention provides a kind of information receiver based on quantum entanglement,
Including：Second safety detection module and information receiving module；Second safety detection module is used for the second photon of local terminal
The corresponding second detection moment group of group is sent to described information transmitting terminal so that described information transmitting terminal is according to the first photon group pair
The the first detection moment group and the second detection moment group answered, to photon in the first photon group and the second photon group
Middle photon carries out quantum entanglement detection；Photon is located at described information transmitting terminal in the first photon group；Described information receives mould
Block at the time of detecting each photon in the 4th photon group for obtaining, as the 4th detection moment group, and determines the described 4th
The timeslice number of timeslice where each moment in moment group is detected, and as the second timeslice number group；It is additionally operable to institute
It states the second timeslice number group and is sent to described information transmitting terminal, so that described information transmitting terminal is detecting first photon
When photon meets quantum Entanglement in photon and the second photon group in group, obtains target acquisition time group and simultaneously return；Institute
It is that described information transmitting terminal will be in the third photon group of modulates information to be transmitted to described information transmitting terminal to state the target acquisition time
Target light subgroup is obtained on the frequency spectrum of photon, is then obtained according to the target light subgroup and the 4th photon group；It is additionally operable to
Coincidence counting is carried out according to the corresponding 4th detection moment group of the target acquisition moment group and the 4th photon group, obtains institute
State information to be transmitted.
According to the fifth aspect of the invention, the embodiment of the present invention provides a kind of message transfer system based on quantum entanglement,
Including：Information transmitting apparatus based on quantum entanglement and as described above the information reception dress based on quantum entanglement as described above
It sets.
Information transferring method, apparatus and system provided in an embodiment of the present invention based on quantum entanglement, by sending out information
Photon carries out quantum entanglement detection with decision content in the second photon group of photon and information receiving end in first photon group of sending end
Whether son transmission is safe, if each photon is satisfied by quantum entanglement characteristic i.e. Quantum Teleportation safety, according to the third of information transmitting terminal
Association in time characteristic in photon group in the 4th photon group of photon and information receiving end between photon, by information to be transmitted from letter
Breath transmitting terminal is sent to information receiving end, realizes the safe transmission of no key, so as to avoid key is based in the prior art
Secrecy transmit process in key preservation and management in there are problems that security risk.
Description of the drawings
In order to more clearly explain the embodiment of the invention or the technical proposal in the existing technology, to embodiment or will show below
There is attached drawing needed in technology description to be briefly described, it should be apparent that, the accompanying drawings in the following description is this hair
Some bright embodiments for those of ordinary skill in the art without creative efforts, can be with root
Other attached drawings are obtained according to these attached drawings.
Fig. 1 is a kind of information transferring method flow chart based on quantum entanglement of the present invention；
Fig. 2 is another information transferring method flow chart based on quantum entanglement of the present invention；
Fig. 3 is the message transfer system schematic diagram based on quantum entanglement of the embodiment of the present invention one；
Fig. 4 is the safety detection interference fringe result of the embodiment of the present invention one；
Fig. 5 is the sending information image to be passed of the information transmitting terminal of the embodiment of the present invention one；
Fig. 6 is the coincidence counting result of the embodiment of the present invention one；
Fig. 7 is the image information that the information receiving end of the embodiment of the present invention one obtains.
Specific implementation mode
In order to make the object, technical scheme and advantages of the embodiment of the invention clearer, below in conjunction with the embodiment of the present invention
In attached drawing, technical scheme in the embodiment of the invention is clearly and completely described, it is clear that described embodiment is
A part of the embodiment of the present invention, instead of all the embodiments.Based on the embodiments of the present invention, those of ordinary skill in the art
The every other embodiment obtained without creative efforts, shall fall within the protection scope of the present invention.
As shown in Figure 1, the embodiment of the present invention provides a kind of information transferring method based on quantum entanglement, including：11, to this
Photon carries out quantum entanglement detection in the second photon group of photon and information receiving end in the first photon group at end；If 12, each light
Son is satisfied by quantum entanglement characteristic, according to the 4th photon of photon and described information receiving terminal in the third photon group of the local terminal
Modulation to the information to be transmitted on photon in the third photon group is sent to institute by the association in time characteristic in group between photon
State information receiving end.
In the present embodiment, quantum light source generates entangled photon pairs.Each photon to be randomly selected for safety detection or
Image transmits.Each photon is to including two photons.Wherein, a photon enters local terminal, and another photon enters information receiving end.
Photon is a photon of each photon centering for safety detection in first photon group.Photon is for pacifying in second photon group
Another photon for each photon centering that full inspection is surveyed.Photon is the one of each photon centering transmitted for information in third photon group
A photon.Photon is another photon of each photon centering transmitted for information in 4th photon group.Pass through to local terminal
Photon carries out quantum entanglement detection in the second photon group of photon and information receiving end in one photon group, it can be determined that the second photon
With the presence or absence of stolen situation, and then determine whether current information transmission environment is safe.If each photon is satisfied by quantum entanglement characteristic,
Then illustrate that stolen situation is not present in the second photon, current information transmits Environmental security, can be transmitted into row information.
In the present embodiment, according to the 4th photon of photon and described information receiving terminal in the third photon group of the local terminal
Modulation to the information to be transmitted on photon in the third photon group is sent to institute by the association in time characteristic in group between photon
Information receiving end is stated, information to be transmitted is transmitted without passing through channel, because transmitting information by encryption without treating.As a result, originally
Invention just realizes securely transmitting for no key.
Information transferring method provided in an embodiment of the present invention based on quantum entanglement, by the first photon group to local terminal
Photon carries out quantum entanglement detection to judge whether Quantum Teleportation is safe, if respectively in second photon group of photon and information receiving end
Photon is satisfied by quantum entanglement characteristic i.e. Quantum Teleportation safety, according to photon in the third photon group of local terminal and information receiving end
Information to be transmitted is sent to information receiving end from local terminal, realized by the association in time characteristic in the 4th photon group between photon
Safe transmission without key, so as to avoid the preservation and management of key in the secrecy transmit process in the prior art based on key
In there are problems that security risk.
It is described that photon progress quantum in photon in first photon group and the second photon group is entangled as a kind of alternative embodiment
Detection is twined, is specifically included：It is synchronous with described information receiving terminal clock, and obtain and detect each photon in the first photon group
At the time of, as the first detection moment group；Obtain the corresponding second detection moment group of the second photon group；According to described first
Detect moment group and it is described second detect moment group, to photon in photon in the first photon group and the second photon group into
Row quantum entanglement detects.
In the present embodiment, due to two photon existence time associate features of entangled photons centering, pass through detection
To in the first photon group at the time of each photon and at the time of detect each photon in the second photon group, to described
Photon carries out quantum entanglement detection in photon and the second photon group in first photon group.
As a kind of alternative embodiment, photon and described information receiving terminal in the third photon group according to the local terminal
The 4th photon group in association in time characteristic between photon, modulation to be passed on photon in the third photon group is delivered letters
Breath is sent to described information receiving terminal：It will be in the third photon group of the modulates information to be transmitted to the local terminal
On the frequency spectrum of photon, target light subgroup is obtained；At the time of acquisition detects each photon in the target light subgroup, as third
Moment group is detected, and determines the timeslice number of timeslice where each moment in third detection moment group, and as the
One timeslice number group；The corresponding second timeslice number group of the 4th photon group is obtained, and obtains the first time piece
Identical timeslice number in number group and the second timeslice number group, as common time piece number group；By described
As target at the time of being located in three detection moment groups in the common time piece number group in the corresponding timeslice of timeslice number
The moment is detected, target acquisition moment group is obtained.
In the present embodiment, detection time is divided at equal intervals during being detected to photon in target light subgroup
Timeslice and serial number, timeslice size setting should ensure that single photon detection event is not more than 1 in most of time piece
It is a.The temporal information of single photon detection event is all recorded to obtain third detection time group, while by single photon detection
The corresponding timeslice number record of event is got off, and first time piece number group is obtained.
As a kind of alternative embodiment, photon and described information receiving terminal in the third photon group according to the local terminal
The 4th photon group in association in time characteristic between photon so that described information receiving terminal is obtained information to be transmitted, specifically include：
By the target acquisition moment group be sent to described information receiving terminal for described information receiving terminal according to the target acquisition when
Quarter group and the corresponding 4th detection moment group of the 4th photon group carry out coincidence counting, the acquisition information to be transmitted.
As shown in Fig. 2, the embodiment of the present invention provides a kind of information transferring method based on quantum entanglement, including：21, it incite somebody to action this
End the second photon group it is corresponding second detection moment group be sent to described information transmitting terminal for described information transmitting terminal according to
The corresponding first detection moment group of first photon group and the second detection moment group, to photon and institute in the first photon group
It states photon in the second photon group and carries out quantum entanglement detection；Photon is located at described information transmitting terminal in the first photon group；22、
At the time of acquisition detects each photon in the 4th photon group, as the 4th detection moment group, and when determining 4th detection
The timeslice number of timeslice where each moment in quarter group, and as the second timeslice number group；23, by second time
Piece number group is sent to described information transmitting terminal, for described information transmitting terminal in detecting the first photon group photon and
When photon meets quantum Entanglement in the second photon group, obtains target acquisition time group and return；The target acquisition
Time is described information transmitting terminal by the frequency spectrum of photon in the third photon group of modulates information to be transmitted to described information transmitting terminal
On obtain target light subgroup, then obtained according to the target light subgroup and the 4th photon group；24, it is visited according to the target
It surveys moment group and the corresponding 4th detection moment group of the 4th photon group carries out coincidence counting, obtain the information to be transmitted.
In the present embodiment, quantum light source generates entangled photon pairs.Each photon to be randomly selected for safety detection or
Image transmits.Each photon is to including two photons.Wherein, a photon enters local terminal, and another photon enters information receiving end.
Photon is a photon of each photon centering for safety detection in first photon group.Photon is for pacifying in second photon group
Another photon for each photon centering that full inspection is surveyed.Photon is the one of each photon centering transmitted for information in third photon group
A photon.Photon is another photon of each photon centering transmitted for information in 4th photon group.
In the present embodiment, detection time is divided at equal intervals during being detected to photon in the 4th photon group
Timeslice and serial number, the size of timeslice is identical as information transmitting terminal timeslice size, and is realized by synchronizing channel
It is synchronous with information transmitting terminal timeslice.The temporal information of single photon detection event is recorded to obtain the 4th detection time
Group, while the corresponding timeslice number record of single photon detection event being got off, obtain the second timeslice numbered sequence.
In the present embodiment, according to photon in the 4th photon group of photon and information receiving end in the third photon group it
Between association in time characteristic, obtain the information to be transmitted, information to be transmitted transmitted without passing through channel, because without treating biography
Breath of delivering letters is encrypted.The present invention just realizes securely transmitting for no key as a result,.
Information transferring method provided in an embodiment of the present invention based on quantum entanglement, by by the second photon group pair of local terminal
The the second detection moment group answered is sent to described information transmitting terminal so that described information transmitting terminal is to light in the first photon group
Photon carries out quantum entanglement detection in the sub and described second photon group, obtains the corresponding second timeslice number of the 4th photon group
The second timeslice number group is sent to described information transmitting terminal by group, so that described information transmitting terminal is described in detecting
When photon meets quantum Entanglement in photon and the second photon group in first photon group, target acquisition time group is obtained simultaneously
It returns, coincidence counting is carried out according to the corresponding 4th detection moment group of the target acquisition moment group and the 4th photon group,
The information to be transmitted is obtained, the safe transmission of no key is realized, so as to avoid the secrecy in the prior art based on key
There are problems that security risk in the preservation and management of key in transmit process.
As a kind of alternative embodiment, the corresponding second detection moment group of the second photon group by local terminal is sent to institute
Further include before stating information transmitting terminal：
It is synchronous with described information transmitting terminal clock, and obtain detect each photon in the second photon group of local terminal when
It carves, as the second detection moment group.
The embodiment of the present invention provides a kind of information transmitting apparatus based on quantum entanglement, including：First safety detection module
And information sending module；First safety detection module, for photon and information receiving end in the first photon group of local terminal
The second photon group in photon carry out quantum entanglement detection；Described information sending module entangles if being satisfied by quantum for each photon
Characteristic is twined, according between photon in the 4th photon group of photon and described information receiving terminal in the third photon group of the local terminal
Modulation to the information to be transmitted on photon in the third photon group is sent to described information receiving terminal by association in time characteristic.
Information transmitting apparatus provided in an embodiment of the present invention based on quantum entanglement, it is right by the first safety detection module
Photon carries out quantum entanglement detection with decision content in the second photon group of photon and information receiving end in first photon group of local terminal
Son transmission whether safety, by information sending module, when each photon is satisfied by quantum entanglement characteristic i.e. Quantum Teleportation is safe, root
According to the association in time characteristic between photon in the 4th photon group of photon and information receiving end in the third photon group of local terminal, will wait for
Transmission information is sent to information receiving end from local terminal, the safe transmission of no key is realized, so as to avoid base in the prior art
There are problems that security risk in the preservation and management of key in the secrecy transmit process of key.
As a kind of alternative embodiment, first safety detection module is non-to be measured for Fu Lansen two-Photon Interferences
Balanced Mach Zeng Deer interferometers, or the dispersion compensation module for the measurement of non-local dispersion compensation.
The embodiment of the present invention provides a kind of information receiver based on quantum entanglement, including：Second safety detection module
And information receiving module；Second safety detection module, for the second photon group of local terminal corresponding second to be detected the moment
Group be sent to described information transmitting terminal for described information transmitting terminal according to the first photon group it is corresponding first detection the moment group with
The second detection moment group, quantum entanglement inspection is carried out to photon in photon in the first photon group and the second photon group
It surveys；Photon is located at described information transmitting terminal in the first photon group；Described information receiving module detects the 4th for obtaining
In photon group at the time of each photon, as the 4th detection moment group, and each moment in the 4th detection moment group is determined
The timeslice of place timeslice is numbered, and as the second timeslice number group；It is additionally operable to send out the second timeslice number group
Give described information transmitting terminal, for described information transmitting terminal in detecting the first photon group photon and second light
When photon meets quantum Entanglement in subgroup, obtains target acquisition time group and return；The target acquisition time is described
Information transmitting terminal will obtain target in the third photon group of modulates information to be transmitted to described information transmitting terminal on the frequency spectrum of photon
Then photon group is obtained according to the target light subgroup and the 4th photon group；It is additionally operable to according to the target acquisition moment
Group the 4th detection moment group corresponding with the 4th photon group carries out coincidence counting, obtains the information to be transmitted.
Information receiver provided in an embodiment of the present invention based on quantum entanglement will by the second safety detection module
The corresponding second detection moment group of the second photon group of local terminal is sent to described information transmitting terminal for described information transmitting terminal pair
Photon carries out quantum entanglement detection in photon and the second photon group in the first photon group, by information receiving module,
The corresponding second timeslice number group of the 4th photon group is obtained, the second timeslice number group, which is sent to described information, to be sent
End, for described information transmitting terminal in detecting the first photon group photon meet volume in photon and the second photon group
When sub- Entanglement, obtains target acquisition time group and return, according to the target acquisition moment group and the 4th photon group
Corresponding 4th detection moment group carries out coincidence counting, obtains the information to be transmitted, realizes the safe transmission of no key, from
And avoid in the secrecy transmit process based on key in the prior art asking there are security risk in the preservation and management of key
Topic.
The embodiment of the present invention provides a kind of message transfer system based on quantum entanglement, including：It is as described above to be based on amount
Information transmitting apparatus that son tangles and the as described above information receiver based on quantum entanglement.
Message transfer system provided in an embodiment of the present invention based on quantum entanglement passes through the second peace in information receiver
The corresponding second detection moment group of second photon group of local terminal is sent to information transmitting apparatus by full detection module；Information sends dress
First safety detection module in setting, to photon in the second photon group of photon and information receiving end in the first photon group of local terminal into
The detection of row quantum entanglement is to judge whether Quantum Teleportation is safe；Information sending module in information transmitting apparatus, it is full in each photon
When enough sub- Entanglement, that is, Quantum Teleportations is safe, according to the 4th light of photon and information receiving end in the third photon group of local terminal
Information to be transmitted is sent to information receiving end from local terminal, realizes no key by the association in time characteristic in subgroup between photon
Safe transmission, exist in the preservation and management so as to avoid key in the secrecy transmit process in the prior art based on key
The problem of security risk.
Based on above-described embodiment, as shown in figure 3, the embodiment of the present invention one provides a kind of information transmission based on quantum entanglement
System, including：Information transmitting terminal 31, information receiving end 32, quantum channel 33, classical channel 34 and synchronizing channel 35；The letter
Ceasing transmitting terminal 31 includes：Quantum light source 311, the first safety detection module 312, image sending module 313, the first classical communication mould
Block 314 and the first clock synchronization module 315；Described information receiving terminal 32 includes：Second safety detection module 321, image receive
Module 322, the second classical communication module 323 and second clock synchronization module 324.
In the present embodiment, quantum light source 311 includes pump light source and nonlinear optical element.Nonlinear optical element
The photon pair that some time-energy tangles is encouraged and generates by pump light source.Wherein, pump light source is continuous pump light source；It is non-
Linear optical element is to generate the nonlinear optical crystal of transition effects under two-stage parametric or generate the spontaneous four-wave mixing effect of three ranks
The non-linear optical waveguide answered.Preferably, quantum light source 311 is non-thread using continuous laser pumping and non-linear silicon nanowire waveguide
Property silicon nanowire waveguide encourage spontaneous four-wave mixing effect that can generate with wide range frequency association characteristic by continuous laser pumping
Time-energy entangled photon pairs.Wherein, the spectrum width of the first photon (1550 ± 8nm) and the second photon (1510 ± 8nm) is all about
16nm, and the frequency association of the first photon and the second photon.Each photon is to including the first photon and the second photon.Each light
Son is transmitted to being randomly selected for safety detection or image.The first photon of photon centering for safety detection enters the first safety
Detection module 312, the first photon of photon centering for image transmission enter image sending module 313.For safety detection
The second photon of photon centering is transmitted to information receiving end 32 by quantum channel 33 and enters the second safety detection module 321, is used for
The second photon of photon centering of image transmission is transmitted to information receiving end 32 by quantum channel 33 and enters image receiver module
322。
In the present embodiment, the first safety detection module 312 include non-local dispersive compensation element, non-equilibrium Mach-once
Dare interferometer, interferometer phase modulator and single-photon detector.Into first light of each of the first safety detection module 312
Son initially enters non-local dispersive compensation element, is tangled with the Time-energy by single mode optical fiber channel, that is, quantum channel 33
Second photon realizes non-local dispersion compensation effect, then passes through unbalanced Mach-Zehnder interferometer and enters single photon detection
Device.Temporal information of the single-photon detector for record photo-event obtains the first detection time group.Wherein, non-equilibrium horse
The phase of conspicuous-Zeng Deer interferometers is by interferometer phase modulators modulate.
In the present embodiment, the second safety detection module 321 includes unbalanced Mach-Zehnder interferometer, interferometer phase
Position modulator and single-photon detector.Passed through non-equilibrium Mach-once into second photon of each of the second safety detection module 321
Dare interferometer enters single-photon detector.Temporal information of the single-photon detector for record photo-event obtains the second spy
Survey time group.Wherein, the phase of unbalanced Mach-Zehnder interferometer is by interferometer phase modulators modulate.Wherein, non-equilibrium
The phase of Mach-Zender interferometer is by interferometer phase modulators modulate.
Information receiving end 32 is sent the second detection time group by classical channel 34 using the second classical communication module 323
To information transmitting terminal 31.Information transmitting terminal 31 realizes that time domain meets by analyzing the first detection time group and the second detection time group
It measures.Time domain coincidence measurement result forms Fu Lansen two-Photon Interference stripeds with the variation of both sides' interferometer phase, reflects
The safety of fiber channel.The arm length difference of the unbalanced Mach-Zehnder interferometer of the present embodiment is 400ps.Fig. 4 is an allusion quotation
The safety detection interference fringe of type is as a result, its contrast is 86.9% ± 2.6%, more than classics-quantum critical value
70.7%, therefore image sender thinks that fiber channel is safe, can carry out image transmission.
In the present embodiment, image sending module 313 includes tunable optical filter and single-photon detector.Tunable optical is filtered
Wave device is the device that adjustable optical filter function can be achieved, and it is controllable to be specifically as follows liquid crystal tunable control mode filter, micromechanics
Mode filter, film tunable filter, grating tunable filter or fiber grating tunable filter etc..Tunable optical in the present embodiment
Filter is programmable filter.Information to be transmitted can be image information as shown in Figure 5.Tunable optical filter pair
The modulation range of one photon is 1544nm to 1558nm, this Frequency modulation range is divided into 31 equal portions.The first light in every equal portions
Son by or be blocked.Therefore, on laterally 31 pixels of Fig. 5, the first photon within the scope of the green corresponding corresponding frequencies of point
Pass through, the first photon is blocked within the scope of the corresponding corresponding frequencies of ash point.It is passed through into first photon of each of image sending module 313
The frequency modulation(PFM) for crossing tunable optical filter reaches single-photon detector.The time of single-photon detector record photo-event believes
Breath and timeslice number, obtain third detection time group and first time piece numbered sequence.
In the present embodiment, image receiver module 322 includes time dispersive element and single-photon detector.Wherein, the time
Dispersion element can be dispersion compensating fiber.In the present embodiment, the group velocity dispersion that standard traffic single mode optical fiber is utilized is come
Carry out conversion of the single photon frequency degree of freedom to time degree of freedom.The group velocity dispersion coefficient of standard traffic single mode optical fiber is about
14ps/nm/km is 10ns according to the wave-packet duration after the broadening of the spectrum width of the second photon estimation.Into image receiver module 322
Each of the second photon by time dispersive element reach single-photon detector.Time dispersive element changes the second of different frequency
Photon reaches the time of single-photon detector.The temporal information and timeslice of single-photon detector record photo-event are numbered,
Obtain the 4th detection time group and the second timeslice numbered sequence.
The single-photon detector or based superconductive that single-photon detector all can be based on avalanche diode in the present embodiment
The single-photon detector of nano wire.
Fig. 6 is a typical coincidence counting as a result, reflecting the case where signal photon is frequency-modulated, wherein the corresponding back of the body
The average accidentally compound count value of scape noise intensity has been subtracted.Fig. 7 is for the frequency modulation information for often arranging setting in Fig. 5
Carry out the whole two dimensional image obtained after coincidence counting processing.The system that the result of the present embodiment illustrates the present invention can be based on
Quantum safety detection and quantum entanglement imaging realize that the long range of image securely transmits in fiber channel.
Finally it should be noted that：The above embodiments are merely illustrative of the technical solutions of the present invention, rather than its limitations；Although
Present invention has been described in detail with reference to the aforementioned embodiments, it will be understood by those of ordinary skill in the art that：It still may be used
With technical scheme described in the above embodiments is modified or equivalent replacement of some of the technical features；
And these modifications or replacements, various embodiments of the present invention technical solution that it does not separate the essence of the corresponding technical solution spirit and
Range.
Claims (10)
1. a kind of information transferring method based on quantum entanglement, which is characterized in that including：
Quantum entanglement detection is carried out to photon in the second photon group of photon and information receiving end in the first photon group of local terminal；
If each photon is satisfied by quantum entanglement characteristic, according to photon in the third photon group of the local terminal and described information receiving terminal
The 4th photon group in association in time characteristic between photon, modulation to be passed on photon in the third photon group is delivered letters
Breath is sent to described information receiving terminal.
2. according to the method described in claim 1, it is characterized in that, described in photon and the second photon group in the first photon group
Photon carries out quantum entanglement detection, specifically includes：
It is synchronous with described information receiving terminal clock, and obtain at the time of detect each photon in the first photon group, as
First detection moment group；
Obtain the corresponding second detection moment group of the second photon group；
Moment group and described second is detected according to described first and detects moment group, to photon in the first photon group and described the
Photon carries out quantum entanglement detection in two photon groups.
3. according to the method described in claim 2, it is characterized in that, in the third photon group according to the local terminal photon with
Association in time characteristic in 4th photon group of described information receiving terminal between photon, by modulation to light in the third photon group
Information to be transmitted on son is sent to described information receiving terminal：
On the frequency spectrum of photon, target light subgroup will be obtained in the third photon group of the modulates information to be transmitted to the local terminal；
At the time of acquisition detects each photon in the target light subgroup, moment group is detected as third, and determine described the
The timeslice number of timeslice where each moment in three detection moment groups, and as first time piece number group；
The corresponding second timeslice number group of the 4th photon group is obtained, and obtains the first time piece number group and described
Identical timeslice number in second timeslice number group, as common time piece number group；
The third is detected and is located in moment group in the common time piece number group in the corresponding timeslice of timeslice number
Moment as the target acquisition moment, obtains target acquisition moment group.
4. according to the method described in claim 3, it is characterized in that, in the third photon group according to the local terminal photon with
It is to be transmitted that association in time characteristic in 4th photon group of described information receiving terminal between photon makes described information receiving terminal obtain
Information specifically includes：
The target acquisition moment group is sent to described information receiving terminal so that described information receiving terminal is visited according to the target
It surveys moment group and the corresponding 4th detection moment group of the 4th photon group carries out coincidence counting, obtain the information to be transmitted.
5. a kind of information transferring method based on quantum entanglement, which is characterized in that including：
The corresponding second detection moment group of second photon group of local terminal is sent to described information transmitting terminal so that described information is sent out
Sending end is according to the corresponding first detection moment group of the first photon group and the second detection moment group, in the first photon group
Photon carries out quantum entanglement detection in photon and the second photon group；Photon is located at described information hair in the first photon group
Sending end；
At the time of acquisition detects each photon in the 4th photon group, as the 4th detection moment group, and determine that the described 4th visits
The timeslice number of timeslice where each moment in moment group is surveyed, and as the second timeslice number group；
The second timeslice number group is sent to described information transmitting terminal, so that described information transmitting terminal is described in detecting
When photon meets quantum Entanglement in photon and the second photon group in first photon group, target acquisition time group is obtained simultaneously
It returns；The target acquisition time is described information transmitting terminal by the third light of modulates information to be transmitted to described information transmitting terminal
Target light subgroup is obtained in subgroup on the frequency spectrum of photon, is then obtained according to the target light subgroup and the 4th photon group；
Coincidence counting is carried out according to the corresponding 4th detection moment group of the target acquisition moment group and the 4th photon group, is obtained
Obtain the information to be transmitted.
6. according to the method described in claim 5, it is characterized in that, corresponding second detection of the second photon group by local terminal
Moment group is sent to described information transmitting terminal：
It is synchronous with described information transmitting terminal clock, and obtain at the time of detect each photon in the second photon group of local terminal, make
For the second detection moment group.
7. a kind of information transmitting apparatus based on quantum entanglement, which is characterized in that including：First safety detection module and information hair
Send module；
First safety detection module, for the second photon group to photon and information receiving end in the first photon group of local terminal
Middle photon carries out quantum entanglement detection；
Described information sending module, if being satisfied by quantum entanglement characteristic for each photon, according to the third photon group of the local terminal
Association in time characteristic in 4th photon group of middle photon and described information receiving terminal between photon, by modulation to the third light
Information to be transmitted in subgroup on photon is sent to described information receiving terminal.
8. device according to claim 7, which is characterized in that first safety detection module is for the bis- light of Fu Lansen
The non-equilibrium Mach-Zehnder interferometers of sub- interferometry, or the dispersion compensation module for the measurement of non-local dispersion compensation.
9. a kind of information receiver based on quantum entanglement, which is characterized in that including：Second safety detection module and information connect
Receive module；
Second safety detection module, it is described for the corresponding second detection moment group of the second photon group of local terminal to be sent to
Information transmitting terminal is so that described information transmitting terminal is according to the corresponding first detection moment group of the first photon group and second detection
Moment group carries out quantum entanglement detection to photon in photon in the first photon group and the second photon group；Described first
Photon is located at described information transmitting terminal in photon group；
Described information receiving module, at the time of detecting each photon in the 4th photon group for obtaining, when as the 4th detection
Quarter group, and determine the timeslice number of timeslice where each moment in the 4th detection moment group, and as the second time
Piece number group；It is additionally operable to the second timeslice number group being sent to described information transmitting terminal, for described information transmitting terminal
When photon meets quantum Entanglement in photon in detecting the first photon group and the second photon group, target is obtained
Detection time group simultaneously returns；The target acquisition time is that described information transmitting terminal sends out modulates information to be transmitted to described information
Target light subgroup is obtained on the frequency spectrum of photon in the third photon group of sending end, then according to the target light subgroup and the described 4th
Photon group and obtain；Be additionally operable to according to the target acquisition moment group and the 4th photon group it is corresponding 4th detection moment group into
Row coincidence counting obtains the information to be transmitted.
10. a kind of message transfer system based on quantum entanglement, which is characterized in that including：Base as claimed in claim 7 or 8
In the information transmitting apparatus and the information receiver based on quantum entanglement as claimed in claim 9 of quantum entanglement.
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